The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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SIR CPW Bandpass Filter with Folded Feed Structure for Suppressing Spurious Harmonics

고조파 억압을 위한 접힌 피드 구조를 갖는 SIR CPW 대역통과 여파기

  • 박광선 (아주대학교 전자공학과) ;
  • 이창언 (아주대학교 전자공학과) ;
  • 천동완 (아주대학교 전자공학과) ;
  • 이진택 (아주대학교 전자공학과) ;
  • 신철재 (아주대학교 전자공학과)
  • Published : 2004.02.01
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Abstract

In this paper, we have proposed the folded feed structure for the spurious harmonic suppression and we have designed the SIR CPW bandpass filter using this feed structure. The characteristic of the proposed feed structure was similar to that of the lowpass filter has wide stopband region and this can be used usefully to the spurious harmonic suppression of the bandpass filter. From the simulation and the measurement result, SIR CPW bandpass filter with folded feed structure has good harmonic suppression characteristics up to 5.8 f$\sub$0/ with -20 dB suppression level.

본 논문에서는 SIR CPW 대역통과 여파기의 고조파 억압을 위한 접힌 피드 구조를 제안하였고 이를 이용해 SIR CPW 대역통과 여파기를 설계하였다. 제안된 접힌 피드 구조는 넓은 저지대역을 갖는 저역통과 여파기의 특성을 보이며, CPW 대역통과 여파기에서 고조파 억압에 매우 유용하게 이용될 수 있다. 시뮬레이션 및 측정결과 접힌 피드 구조를 갖는 SIR CPW 대역통과 여파기는 5.8 f$_{0}$까지 -20 dB 이 하로 고조파를 억압하는 우수한 특성을 보임을 알 수 있었다.다.

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References

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